Labyrinth-packing.



L. CUBELIC.

LABYRINTH PACKING.

APPLICATION FILED 1UN1313,1911.

1,049,81 1 Patented Jan. 7, 1913.

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Wltnesses: Invent-.01,

Ludwig Cubelic, HMqtt-I.

UNITED STATES PATENT oEEicE.

-Lunwie cUBELIo, or cHARLor'rENBbRG, csa-MANY, AssIGNoR To GENERAL ELECTRIC cnivrpANY, A CORPORATION or NEW YORK.

LABYRINTH-PACKING.

Specicatton of Lettersatent Patented Jan. 7,191."

Application' mea :une 13.11911. serial No. 632,921.

To all w71 om'it may concern:

-Bff it lmOWn that L'LUDwIcfCui-imc, a SUbJECt f -the King .of-Prussia, residing at Charlottenburg, Germany; have invented certa-iiiV newand useful Improvements-inlLabyrinth-Packings, of which the following casing being' ordinarily undivided. Thisl object is secured by supporting the packing in l the casing byA means of seatsrorshoulders' that are suitably` spaced apart 1and. increase in diameter` from one end of the stuffing box to the other, said,seats having a widtht-hat -is less than one ofthe packing grooves of .the labyrinth packingA so that the raising.

of the parts of the packing Within the casiiig by substantially the heightbf. a packing''projection-v or ring and their.` subsequent lateral removal aremade possible. The use of the harrow seats has the further advantage that the packing on account of the small st'ipportin surfaces cannot burn. or .rust fast-in suc 'a manner as to make it impossibleto reiiioye -the"packin g. Nevertheless#- by suitablyfa'rranging the supporting seats a positionn of the packing is secured which isjust-` as e ect-ive as if .it were fitted in the casing aloiigvits entire surface. Y In the accompanying drawing illustrating one of the embodimentsof the invention. Figure 1.. is a partial longitudinal'sectipn of the packing and the casing also showing a' vportion of the shaft: and Fig. 2 is a section on the line 2-Qof Fig. l. v'

Secured to and rotating with a 'shaft 3 is a sleeve 4 'carryin'g a series of annular projections or rings 5' on its periphery. Arranged in the spaces. between the rings 5 is a' series of similar lrings or projections 6 that are carried bv the. cvlinder 'T that is supported in thecasing 8 b v the lnarrow seats 9 and 10 and held against axial movemenfbv the bolts 11 passing through the lat- A-eral flange 1Q on the cylinder. the bolts 1-1 also securing. an additional packing member 13 to the casing. The seat 10 is made of larger diameter than the seat' 9 so that there is a clearancespace 14, between ,the outsideof the cylinder or'support- 7 andthe adjacent I. wall of the casing. clearance space: is also proi-ided between the flange 1 2 and the adjoining portion of t lie casing. The diameters 'of these clearances must beat least sufficiently greater thanthe diameters of the cylinder a'ndthe angeto permit the halves of the packing to be "lifted clear'of the rings 5 -under certain conditions.

Obviously more than two seats can be provided f'or the packing. if the conditions make it desirablesaid seats being arranged at suitable distances apart. The width dof the seats must be slightly less than the clearance space between the rings 5 and G so that by taking out thel bolts. 15 tli'at secure/the halvesof the cylinder T together and moving'eithei half axially to' free it from its seatsnsaid half can then be lifted .clear of the' rings '5 and movedaxially and laterally to remove it from the casing through the .opening 1G. Before this is done the packing member 13 must be removed by taking' out the bolts 1T that secure the halves oi .tht` "member together and unscrewing the -holts 11 that attach said halves and the flange 12 to the casing 8. 'hen thebolts have been removed the4 halves of themember 13 can then be lifted clear of the' rings 5 and-'taken out of the machine. The method ofassembling or replacing the packing will be the 'reverse of the procedure just outlined and A will be understood without further explanation. g /A i Elastic Huid can be supplied to the packing lthrouglithe conduit 1S which opens into the clearance space 'l-l, passages 19 being provided iii thev `c \"liiiderl7 between dthe'clearance space and the packing space. This sup' ply of elasticyfluid will assist in preventing leakage along the packing.

Iii accordance .with the provisions of the patent statutes,Y l have described the principle of operation -of my invention together. with the apparatus which I now consider to represent the besteinbodimeut thereof; but I. desire to have it understood that the appa-l ratusshown isonly illustrative-and that vthe invention can be carried out by other means.-

iVhat 'I claim asnew and desire to secure by Letters Patent of the United States` is:

A1. ln a labyrinth packing for a sliaftftlie combination of a casing, a rotating shaftv within the casing. a series of vpacking rings carried by the shaft. and a divided support carrying a series of packing rings thatsurround the shaft, the rings of oneseries proand means for securing the. supportoagainst l the other series, there being circular lseats jecting into the spaces between the rings of l the other series,V and the casing being pro- 'l vided with seats for said support thathave i a width which is less than the difference between the width of a space and a ring.

2. In a labyrinth packing for a shaft, the combination of a casing, a rotating shaft within the casing, a series of packing rings carried by the shaft, and Ya support made in sections that carries a series of packing rings thatA surround the shaft, the rings of one series projecting into the spaces between the rings -of the other series, andthe casing being provided with circular seats for said support that are of different diameters and have a width that is less than the diiference between the width of a space and a ring.

3. In a. labyrinth packingv for a shaft, the combination of a casing, .a rotating sh'aft within the casing, 'a series of packing'rings carried by theshaft, a support made in sections that carries a series of packing rings that surroun'd the shaft, the rings ofvone'series projecting into the spacesbetween the rings ofthe other series, there being circular seats of different diameters on the casing for said support that are spaced apart and have' a width that.- is less than the difference between the width of aA space and a ring, said diameters increasing progressively from one end of the packing to the other,

axial movement. v y

4. In a labyrinth packing for a shaft, the combination of a casing, aV rotating shaft within the' casing.ia series of packing rings carried by the shaft, and a. substantially cylindrical support' made i-n sectionsthat carries aseries of packing rings that surround the shaft, the rings of one series projecting into the spaces between the rings of of different diameters on the casing for said support, lthe width of the seats being less than the difference between the width of a space and af' ring, and the diameter of the support 'between twoadjoining seats being less than the diameter of the casing between said seats so that the support is in engagement with the seat portions only of the caslng, I

5. In alabyrinth packing for a shaft, the combination of a casing, a rotating shaft within the casing, a series of packing rings carried by the shaft, and a cylindrical support made in sections that carries a series of packing rings' that surround the Shaft, the rings of one series projecting into the spaces between the rings of the other series,

there .being circular seats of different diam.

eters spaced apant on the casingl for said support, the width of the seats being less than the diference between the width of a space and a ring, and a tiange on the support, the diameter. of the support between adjoining seats andA the diameter of the {iange being suiiciently less than thel diameters of the adjacent portions of the casing to permit the sections of the support to be lifted clear of the rings on the sh'aftand taken out ofthemachine after .said sections have been moved axially, to free them from said seats.

` 6, In labyrinth packing "for a shaft, the combination of a. casing, a rotating shaft within the casing,a series of packing rings carried bythe shaft, a divided support carrying a series of packing rings that surround the shaft., the rings of one series projeeting into the. spaces between the rings of the other series, the casing being provided with circular seats for the support that progressively increase in'vdiameter rfrom one end of the packing to the other, and a clearance space being provided between the outerV surface of the support between two vadjoin- `ing seats and thev adjacent portion Aof vthe casing, and means 'forsupplying elastic'luid to the clearance space, there being passages in thesupport for conveying said fluid to the.

' packing space.

In witness whereof, 4I `have hereunto set my hand this 27th day of May, 1911.

LUDWIG connue.

lVitnesses:

Fnrnonron GANznRr, Or'ro Scnlurm 

